On the morning of July 7, 2019, the release of water from Glendo Reservoir will be decreased from approximately 4,500 cubic feet per second (cfs) to a flow of approximately 1,500 cfs. The decreased flow will cause a rapid decline of the Guernsey Reservoir level of approximately 25 feet starting the morning of July 8th and continuing through July 11th. By Thursday, July 11th, the boat ramps at Guernsey Reservoir will no longer be useable due to the low reservoir level.
Water being released from Glendo Reservoir will flow through Guernsey Reservoir flushing silt from Guernsey Reservoir into the canals of downstream irrigators. The silt run will begin on July 12th and is anticipated to continue through July 25th. Beginning on the evening of July 25th, the release of water from Glendo Reservoir will be rapidly increased to refill Guernsey Reservoir. The level of Guernsey Reservoir is expected to be suitable for boating again by the morning of July 27th. However, the reservoir will continue to rise by approximately 6 feet per day and is expected to reach the normal reservoir operation level by the evening of Tuesday, July 30th.
Boaters, recreationists, and irrigators should take proper precautions regarding changing river flows between Glendo and Guernsey Reservoirs and the rapid lowering and refilling of Guernsey Reservoir.